Far-infrared and submillimeter wavelength observations of star-forming dense cores. II - Images

E. F. Ladd, Fred C. Adams, S. Casey, J. A. Davidson, G. A. Fuller, D. A. Harper, P. C. Myers, R. Padman

Research output: Contribution to journalArticle

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Abstract

This paper reports on far-infrared and submillimeter wavelength observations of low-mass protostellar candidates. The data set comprises emission maps of nine sources observed over a wavelength range 100-800 microns. The emission is extended at all wavelengths longer than 100 microns. The apparent size of the emission regions is weakly correlated with the beam size and is consistent with an underlying specific intensity profile which is scale-free. The observed emission maps are not circular, but have a mean aspect ratio of 1.3, and the position angles are similar to those determined from maps of molecular emission. The observational results are used in conjunction with theoretical considerations to constrain the physical properties of the putative protostellar envelopes.
Original languageEnglish
Pages (from-to)555-569
JournalThe Astrophysical Journal
Volume382
DOIs
Publication statusPublished - 1 Dec 1991

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Ladd, E. F. ; Adams, Fred C. ; Casey, S. ; Davidson, J. A. ; Fuller, G. A. ; Harper, D. A. ; Myers, P. C. ; Padman, R. / Far-infrared and submillimeter wavelength observations of star-forming dense cores. II - Images. In: The Astrophysical Journal. 1991 ; Vol. 382. pp. 555-569.
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abstract = "This paper reports on far-infrared and submillimeter wavelength observations of low-mass protostellar candidates. The data set comprises emission maps of nine sources observed over a wavelength range 100-800 microns. The emission is extended at all wavelengths longer than 100 microns. The apparent size of the emission regions is weakly correlated with the beam size and is consistent with an underlying specific intensity profile which is scale-free. The observed emission maps are not circular, but have a mean aspect ratio of 1.3, and the position angles are similar to those determined from maps of molecular emission. The observational results are used in conjunction with theoretical considerations to constrain the physical properties of the putative protostellar envelopes.",
keywords = "Emission Spectra, Far Infrared Radiation, Protostars, Star Formation, Submillimeter Waves, Infrared Spectra, Spectral Energy Distribution, Stellar Envelopes, Stellar Temperature",
author = "Ladd, {E. F.} and Adams, {Fred C.} and S. Casey and Davidson, {J. A.} and Fuller, {G. A.} and Harper, {D. A.} and Myers, {P. C.} and R. Padman",
year = "1991",
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doi = "10.1086/170742",
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Ladd, EF, Adams, FC, Casey, S, Davidson, JA, Fuller, GA, Harper, DA, Myers, PC & Padman, R 1991, 'Far-infrared and submillimeter wavelength observations of star-forming dense cores. II - Images' The Astrophysical Journal, vol. 382, pp. 555-569. https://doi.org/10.1086/170742

Far-infrared and submillimeter wavelength observations of star-forming dense cores. II - Images. / Ladd, E. F.; Adams, Fred C.; Casey, S.; Davidson, J. A.; Fuller, G. A.; Harper, D. A.; Myers, P. C.; Padman, R.

In: The Astrophysical Journal, Vol. 382, 01.12.1991, p. 555-569.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Far-infrared and submillimeter wavelength observations of star-forming dense cores. II - Images

AU - Ladd, E. F.

AU - Adams, Fred C.

AU - Casey, S.

AU - Davidson, J. A.

AU - Fuller, G. A.

AU - Harper, D. A.

AU - Myers, P. C.

AU - Padman, R.

PY - 1991/12/1

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N2 - This paper reports on far-infrared and submillimeter wavelength observations of low-mass protostellar candidates. The data set comprises emission maps of nine sources observed over a wavelength range 100-800 microns. The emission is extended at all wavelengths longer than 100 microns. The apparent size of the emission regions is weakly correlated with the beam size and is consistent with an underlying specific intensity profile which is scale-free. The observed emission maps are not circular, but have a mean aspect ratio of 1.3, and the position angles are similar to those determined from maps of molecular emission. The observational results are used in conjunction with theoretical considerations to constrain the physical properties of the putative protostellar envelopes.

AB - This paper reports on far-infrared and submillimeter wavelength observations of low-mass protostellar candidates. The data set comprises emission maps of nine sources observed over a wavelength range 100-800 microns. The emission is extended at all wavelengths longer than 100 microns. The apparent size of the emission regions is weakly correlated with the beam size and is consistent with an underlying specific intensity profile which is scale-free. The observed emission maps are not circular, but have a mean aspect ratio of 1.3, and the position angles are similar to those determined from maps of molecular emission. The observational results are used in conjunction with theoretical considerations to constrain the physical properties of the putative protostellar envelopes.

KW - Emission Spectra

KW - Far Infrared Radiation

KW - Protostars

KW - Star Formation

KW - Submillimeter Waves

KW - Infrared Spectra

KW - Spectral Energy Distribution

KW - Stellar Envelopes

KW - Stellar Temperature

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DO - 10.1086/170742

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JO - The Astrophysical Journal

JF - The Astrophysical Journal

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